Machine for making spool-blanks.



Patented May-20, I902 .1. W.'CARVER. i MACHINE FOR MAKING SPOUL BLANKS.

(Application filed Aug. '14, v1000;

2 Shady-Sheet i.

(No Model.)

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No. 700,400. Patented May 20, I902;

J. w. CARVER.

MACHINE FOR MAKING SPOOL BLANKS.

(Application filed Aug. 14,0899.) 7 (No Model.) 0 2 Sheets$heet 2.

m'znwea R 2. Jivenzrholder or receiver.

Nrrnn STAT S PATENT QFFIQE.

JAMES W. CARVER, OF AUBURN, MAINE.

MACHINE FOR MAKING- SPOOL- BL-ANKS.

sPneIFIcA'rIoN forming part of Letters Patent No. 700,430, dated May 20, 1902. Application filed August 14, 1899. Serial No. 727,203. (No model.)

prising means for receiving andholding one. I above the other a number of pieces of wood,

preferably squared strips, from which the spool-blanks are formed, which pieces may be of different lengths, means for seizing and feeding forward successively the lowermost 24:: piece or stickjof the pile or'stack, means for turning or cutting to shape a sufficient portion of the forward end of the stick which is being fed to form a spool-blank and simultaneously boring a hole longitudinally therethrough, means for severing theblankthus formed from the stick,-a n d means for conveying the blank thusformed to a proper receptacle or holder, all said. means cooperating in an organized machine to form spool-blanks continuously and a'utom'aticallyfrom 'pre pared sticks or pieces which areplacedina stack or pile oneabove the other in the said In the following specificationl will describe a machine embodying my invention, andin the claims at the close thereof I will point out and clearly define the novel features of my invention.

Reference is to be made to the accompanyo ing drawings in which' 7 Figure 1 is a side elevation of a machine" embodyingmy invention. Fig. 2 is a topplan view thereof. Fig. 3 is a'transverse vertical section on line 3 3 of Fig. 1. Fig. 413a trans- 5 verse vertical sectionon line 4 ,4 of,Fig.=1.= Fig. 5 is a detail view in section of the cutter-- head and connectedparts. Fig. 6 is a detail I view of the cam 2 and connections. Fig. 7 is a detail view of the cam 41 andconnections.

5o A is the frame ofsthe'machine, which pref- ,erably is supported by legsB B. The said t legs areconnected togetherin pairs by'the for pieces.

cross-pieces O O, which lattersupport the I rious cams, by means, ofwhich the various operative parts are actuated.

Atone end of the frame A is placed the receiyer and holder for the stack of squared sticks 12, from which the spool-blanks are to be formed. This holder comprises uprights 6,7, 8,'and 9, whichare bolted to frame A.

.gThese uprights are placed together in pairs,

the pair consisting-of the uprights 6 and 7 being at one extreme end of frame A, while the pair 8 and9 is at a distance from the for- .jmer corresponding substantially with the length of the shortest sticks or pieces which are intended to be handled The uprights forming each pair are spacedapart widely enough to permit free movementof orpieces-12. between them.

Each of the uprights 8 and .9

the sticks walls or wings extending towardthe pair of uprights 6 and? on'oppositejsides-of the stack Jor pile of sticks or pieces 12 and assisting to prevent lateral displacementof the'said sticks V p is provided with a projecting wall lor'wing-l3, the said.

The'lowermoststickiin the stack orpile rests in a box-shaped feeder 15,'whichpreferably is formed of met'al and open ateachend,-the bottom of the said feeder at the forward end extending slightly. beyond the side'sthereof. The saidfeederrests on the- Tbottompieces 10V 11 and slides thereon 'as itis reciprocated toward and from'thecutter- I head. "In each side wall ofithesaidfeederan opening 16 is formed,throu'ghwhich projects the inwardly-curvedforward extremity of a.

.spring-dog-17, which latter is securedat its rear end to the side of the feeder.

forwardthereby between the jaws 18 and 19 of'the clamp which is adjacentjthe.cutter head. "During the reverse movementoffthe;

feeder the tootheddogs slide; along th'e side' The ser- I y 3- rated ends of the said inwardly-curved ex- 1 tremities of the dogs 17 17 engage the stick f of the stick, which at this time is held securely between the clamping-jaws 18 and 19. Another springdog 171, provided with a downwardly-bent serrated end, is located on top of the feeder at the forward end of the latter, the rear end of said spring-dog17l being enlarged sufficiently to extend across the top of the feeder over the stick which lies therein and being rigidly secured to the sides ofthefeeder. Thedownwardly-bentforward end of this dog engages with the top or upper surface of the stick within the feeder and assists in effecting the forward movement of the stick as the feeder is advanced. When the feeder is moving in the reverse direction, the said spring-dog is dragged back over the surface of the stick in the same manner as are the side dogs.

The reciprocation of the feeder is effected as follows: To the under side thereof is secured a downwardly-projecting arm 20, to which is pivotally connected one end of a link 21, the other end of said link being pivotally connected with the vertically-extending arm of the bell-crank 23, which latter is pivoted within the frame A of the machine. Slot 22 in said vertical arm provides for adjustment of the link to enable the extent of the feed movement of the feeder to be varied. To the horizontally projecting arm of the said bell-crank is pivoted a link 24, the latter having a yoke-shaped or slotted portion 241 at the lower end thereof fitting over shaft E and provided with a pin 211, working in the groove of the cam 2 on the said shaft. As the shaft revolves the link 24: is vertically reciprocated, swinging the bell crank on its pivot and by means of the connection 21 and arm 20 reciprocating the feeder 15. In consequence of being pushed forward at each ad- Vance of the feeder and of being held by the clamp 18 19 during each retraction of the feeder the stick which lies within the feeder is fed forward step by step, the extent of feed at each step being proportioned to the length of spool-blank which it is desired to form. \Vhen the stick of wood within the feeder has been fed forward, so that its rear end clears the forward end of the stick lying immediately above it, the latter stick drops into position in the feeder-box; but since the forward end of said latter stick is not yet in a position to be seized by the clamping-jaws 1S and 1f) the said stick would simply be moved backward and forward as the feeder reciprocates without being fed forward step by step, as is desired, unless other means were provided to prevent the backward movement thereof. To provide against this backward movement of the stick which last entered the feeder, an auxiliary clamping device is provided, which comprises two levers 151 151, crossing each other-substantially in the manner of a pair of tongs. These are pivoted at 152 within the frame A. The upper ends of said levers operate through longitudinal slots in the sides of the feeder, the said ends having applied thereto screws 153 153. The points of the said screws are intended to engage with the stick lying within the feeder. The lower arms or tailpieces of the clamplevers 151 151 bear upon the peripheries of a pair of cams 30 30, secured on the main shaft E. As the shaft revolves the said cams operate to spread apart or separate the lower ends of the clamp-levers, thereby causing the upper ends thereof to close upon the stick lying within the feeder to hold said stick and prevent it from moving backward during the reverse movement of the feeder.

The screws 153 153 are provided on the upper ends of the clamp-levers 151 151 in order to permit adjustment to be made to accommodate pieces of wood of varying thickness and, further, in order to permit a fine adjustment of the pressure exerted by the auxiliary clamp.

The main clam p comprises the clam p-levers 18 19, which are pivoted at 181, the lower arms or tailpieces of the said clamp-levers being engaged by cams 182 182 on shaft E. The upper arms of said clamp-levers preferably are'provided with adjustable screws, as 183 183, for engagement with the stick of wood which is between such arms.

The cams 182 182 are so timed as to insure the engagement of the wood by the said clamp-levers 18 19 during the time when the feeder is moving rearwardly and while the cutter-head is forming and boring a blank and the saw is severing the blank thus formed from the stick.

The lower ends or tailpieces of the clamplevers 151 151, 18, and 19 are each provided with a screw 31, the end of which comes in contact with the periphery of the corresponding cam. The said'screws enable an adjustment of the space between the jaws of the auxiliary and main clamps to be effected to suit the widths of the sticks which are being operated upon.

A stick having been fed forward by the action of the feeder 15, so that a sufficient portion of its free end projects to form a spool-blank, the said stick is seized and held securely by means of the clamping-levers 18 and 19, as above described. The cutter-head is then moved onto the end of the said stick to cut the stick to shape, the said cutterhead operating to form a cylindrical spool-blank with a hole longitudinally theretln'ough, as is required in spools of common construction, such as are used for thread and the like.

The cutter-head is shown at 35 and is mounted on the end of the cutter-head shaft 36. The latter is journaled in two uprights 37 and 38, which are bolted on top of the frame A. The shaft 36 is provided with a pulley 39, by means of which power is applied. For the purpose of sliding the shaft toward and from the wood a sleeve 4-0 is secured on the said shaft, the said sleeve being provided with an annular groove which is entered by the inwardly-projecting pins 41 of the Yrshaped upwardly-extending arm of the bell-crank 42; The bell-crank 42 is pivoted at 43 within' the frame A. To the other arm of the bell-crank is pivoted at/H a link 45, the lower end of. which is slotted or yoke-shaped to fit over,

shaft E, .the said link carrying a pin which works'in the groove of cam 5. The cam 5 operates to cause the cutter -head to be advanced onto the wood to out the spool-blank to shape and then to be withdrawn.

The cutter-head 35is of well-known construction, being cylindrical in shape and provided with a knife or knives 351, so that as it advances onto the wood it cuts the portion of Wood which enters within the head to cylindrical shape.

The shaft36, which carries. the cutter-head,

is hollow, and withinthe sameis fitted a tube 47, which is split, as shown at 48, at its forward end next the cutter-head, preferably at four equidistant points. The split end is formed with a slight external flare or reverse taper, which as the tube is drawn into the tudinally through the blank. Byplacingthe shank of the auger within thetubeand turn-, ing the hand-wheel 51 the tubeis drawn into the cutter-head shaft and thesplit end thereof caused to clamp theshank of the auger firmly and hold the auger securely in place. As will be clear, a-very long, auger may be employed, which is advantageou s,since if the anger is broken vor dulled it may berepeatv edly regronnd and its life prolonged;

When the cutterehead has been moved away, from the wood, after completingthe operation of cuttingv and boring the blank, it then re=. mains to sever the blank thus formed from 'thestick. For this purpose I provide a circular saw 52, which is mounted on a shaft 53, the said shaft being journaled in a swinging frame 54. and provided with a pulley 55, by means of. which power maybe applied. The

frame 5.4:is pivoted tothe frame A ati56 and is provided with a projecting arm, to which is pivoted the upper end .of a connection 57, Fig. 1, the lower end ofwhich is slotted or yoke-shaped to fit overshaft E, asshown in Fig.7. The cam 41 on the .main. shaft is; grooved to, receive a, pin. 4,,projeoting from said connection. As thesha'ftrevolves the saw is, moved by these means positively through the wood, severing the blanks, and is;then

.out of the jaws.

moved positivelyin the reverse direction into position for thenextfo'rward movement; Y

a After the blank is severed'it, falls intoja re ceiver I58 and thence upassesdownwardly through a conductor 581 to a receptacle '59, conveniently placed. t

The small pieces attheend or a stick, which are too smallfor use in forminga blank, will when the last blank is cuttherefrom and as the clamp-levers 18 and 19 areopened'drop The operation of the machine is automatic and continuous, it beingonly necessary for the attendant to place pieces of wood-which,

have been preferably formed in square'sticks of proper size in the receiveror holder one above the other and to see that the supply of said squared sticks is renewed from time to time. a

I claim as my invention+ V 1 1. An organized machine for forming spo0l= blanks and the like, comprising, essentially, guidesfor stock prepared in stick form, the reciprocating trough-shaped feeder provided, with, dogs to engage thestock within said,

feeder in the advance of thefeeder, the cute ter-headto shape the end portion ofthe stick, the tool to form the centralhole in such end portion, the movable clamp members to en gage with the stock adjacent the cutter-head, cam mechanism to operate the said movable clamp members, and means to sever the fin ished blank, substantially as described.

2. An organized machine forforming spool-.

blanks and the like, comprising, essentially, guides for stock prepared instick form,.the

reciprocating trough shapedfeeder proyided with dogs to engagethe stock within said,

feederin the advance of the feeder, thecutter-head to shapethe end portion of thestick,

the tool to form-thejcentral hole insuch end portion, the movableclampmembers toen gage withthe stock adjacenttheacutten head,

cam mechanism .to operate thesaid movable clamp members, the supplementary clamp to engage-the freshpieceof stock with -t said feeder. and holdthe sameduring. the,re+ turn movement of the feeder andtmeans to sever the finished blank, substantiallyvas described. i

3. An organized machine for forming spoo l;

blanks andthe like, comprising, essentially,

guides, for stock; prepared in stick form, the

reciprocatingjtrough shaped feeder provided withdogs'to engage the stock within said feeder in {the advance of the feeder,= the. em; tor-head to shapetheend portion of the stock,

the augerto :bore the centrahhole in such end portion, means, to rotate and ate advance clamp member. to engage-with-thestock-adj en h rhead; amim e aeism tea on: erate t e-sai v c amp memheraaend means to sever the finished blank,,su bstan-. tially as described.

org n z m h r.

25 said cutter-head, and anger, the movable blanks, containing, in combination, guides for stock prepared in stick form, the reciprocating feeder, the clamp to hold the stick While being operated upon, the supplementary clamp to hold the fresh stick during the receding movement of the feeder, the cutterhead to turn the end portion of the stick, an anger to bore a central hole in such end portion, and a cutter to sever the blank from the end of the stick, substantially as described.

5. The combination with the cutter-head, and its hollow shaft, of the tube Within the said shaft and having the split end with external flare, the auger Within the said tube, and means to move the tube endwise Within the shaft to compress it upon the auger, substantially as described.

In testimony whereof I aliix my signature in presence of two witnesses.

JAMES W. CARVER.

Witnesses:

WM. A. MAoLEoD, ALICE II. MORRISON. 

